EP0408910A2 - Dispositif d'échappement d'un moteur à piston alternatif - Google Patents

Dispositif d'échappement d'un moteur à piston alternatif Download PDF

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Publication number
EP0408910A2
EP0408910A2 EP90111527A EP90111527A EP0408910A2 EP 0408910 A2 EP0408910 A2 EP 0408910A2 EP 90111527 A EP90111527 A EP 90111527A EP 90111527 A EP90111527 A EP 90111527A EP 0408910 A2 EP0408910 A2 EP 0408910A2
Authority
EP
European Patent Office
Prior art keywords
exhaust system
air
catalyst
casing
monoliths
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
EP90111527A
Other languages
German (de)
English (en)
Other versions
EP0408910A3 (en
Inventor
Herbert Dipl.-Ing. Ampferer
Klaus Dipl.-Ing. Schneider
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dr Ing HCF Porsche AG
Original Assignee
Dr Ing HCF Porsche AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dr Ing HCF Porsche AG filed Critical Dr Ing HCF Porsche AG
Publication of EP0408910A2 publication Critical patent/EP0408910A2/fr
Publication of EP0408910A3 publication Critical patent/EP0408910A3/de
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/22—Control of additional air supply only, e.g. using by-passes or variable air pump drives
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/30—Arrangements for supply of additional air
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • the invention relates to an exhaust system of a multi-cylinder reciprocating piston engine according to the preamble of claim 1.
  • the characteristic features of claim 1 serve to solve this problem. If the air supply point lies approximately in the middle between two separately produced monoliths enclosed by an outer jacket of the catalytic converter, the air can flow into the catalytic converter without the risk of damage being caused by excessive cooling to suspend.
  • the further constructive measures formulated in the subclaims contain this danger to such an extent that the functional reliability of the catalytic converter is guaranteed in all possible operating states of the engine and at the same time an inexpensive manufacture of the catalytic converter is ensured.
  • the catalyst 4 consists of two metal support monoliths 5 and 6, which are arranged coaxially at a distance from one another and are enclosed by a common outer jacket 7.
  • the monoliths 5, 6 are surrounded by jacket tubes 8 and 9, at the ends of which one inside the other there is an air supply point 10 to the catalyst 4.
  • the air supply point 10 is supplied with air via an air line 11 via an electro-pneumatic changeover valve 12.
  • a second air line 13 leads from the changeover valve 12 to the air filter 14 of the reciprocating piston engine, a third air line 15 leads to an air pump 16 which is driven by an electric motor and which sucks in ambient air via an air filter 17.
  • a control air line 18 leads from the changeover valve 12 to the intake pipe of the reciprocating piston engine.
  • the changeover valve 12 is designed as a cycle valve, reacts to signals from the Motronic 19 of the reciprocating piston engine and is actuated by the negative pressure of the engine intake pipe via the control air line 18.
  • the changeover valve clears the way to the first air line 11, so that additional air reaches the catalyst 4 at the air supply point 10.
  • the changeover valve closes the air line 11 and opens the air line 13 to the air filter of the reciprocating piston engine.
  • the air supply point 10 to the catalyst 4 is between two radially inwardly facing beads 20 of the outer shell 7. It is formed by a radial bore 21 of the outer shell 7, an annular channel 21 'and a plurality of radial bores 22 of the longer jacket tube 8, which in the shorter jacket tube 9th is centered with sliding seat.
  • the two outer ends of the casing tubes 8 and 9 are in radial flanges 23 of the outer casing 7 with a sliding fit centered. In the event of temperature-related changes in length, the two jacket tubes 8 and 9 can freely expand both against one another and with respect to the outer jacket 7.
  • the jacket tubes are composed of cylindrical tube sections, adjoining conically narrowing tube sections 24 and cylindrical tube sections 25 at the end. Since the jacket tubes 8, 9 are centered in a sealed manner in beads 20 and flanges 23 of the outer jacket 7, heat-insulating air gaps 26, 27 are formed between the jacket tubes 8, 9 and the outer jacket 7. The sealed beads prevent hot exhaust gases from entering the air gaps 26, 27 and eliminating the desired insulating effect.
EP19900111527 1989-07-15 1990-06-19 Exhaust system of a reciprocating internal combustion engine Ceased EP0408910A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3923517A DE3923517A1 (de) 1989-07-15 1989-07-15 Abgasanlage eines hubkolbenmotors
DE3923517 1989-07-15

Publications (2)

Publication Number Publication Date
EP0408910A2 true EP0408910A2 (fr) 1991-01-23
EP0408910A3 EP0408910A3 (en) 1991-09-18

Family

ID=6385167

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900111527 Ceased EP0408910A3 (en) 1989-07-15 1990-06-19 Exhaust system of a reciprocating internal combustion engine

Country Status (3)

Country Link
US (1) US5094072A (fr)
EP (1) EP0408910A3 (fr)
DE (1) DE3923517A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993024745A1 (fr) * 1992-05-25 1993-12-09 Eero Kynsilehto Epurateur catalytique pour les gaz d'echappement d'un moteur a combustion interne a alimentation additionnelle en air
EP1887194A1 (fr) * 2006-08-04 2008-02-13 J. Eberspächer GmbH & Co. KG Dispositif de purification de gas d'échappement

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5248859A (en) * 1991-03-25 1993-09-28 Alexander Borla Collector/muffler/catalytic converter exhaust systems for evacuating internal combustion engine cylinders
DE4445557A1 (de) * 1994-12-20 1996-06-27 Emitec Emissionstechnologie Doppelwandiges Gehäuse, insbesondere für Abgas-Katalysatoren von Kraftfahrzeugen
US5787584A (en) * 1996-08-08 1998-08-04 General Motors Corporation Catalytic converter
JP2003200060A (ja) * 2002-01-10 2003-07-15 Calsonic Kansei Corp 金属製触媒担体およびその製造方法
DE10217925B4 (de) * 2002-04-22 2005-07-28 J. Eberspächer GmbH & Co. KG Katalysator für eine Brennkraftmaschine
US7765801B2 (en) * 2005-11-30 2010-08-03 Benteler Automotive Corporation Exhaust gas treatment device with insulated housing construction

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1406704A (en) * 1972-02-24 1975-09-17 Gkn Sankey Ltd Emission control device
US3906723A (en) * 1974-03-08 1975-09-23 Toyota Motor Co Ltd Exhaust gas purifying system
US3972687A (en) * 1974-03-21 1976-08-03 Paul Gillet Gmbh Catalytic converter having pressurized-gas support means
US4049388A (en) * 1976-07-12 1977-09-20 Arvin Industries, Inc. Center air manifold for catalytic converter
US4191013A (en) * 1976-06-02 1980-03-04 Nippon Soken, Inc. Device for purifying exhaust gases from internal combustion engine
US4231220A (en) * 1977-08-17 1980-11-04 Toyota Kidosha Kogyo Kabushiki Kaisha Secondary air control system for an internal combustion engine
US4235843A (en) * 1978-08-14 1980-11-25 Toyo Kogyo Co., Ltd. Catalytic converter
US4394351A (en) * 1981-09-08 1983-07-19 General Motors Corporation Dual-monolith catalytic converter with secondary air injection
EP0177479A1 (fr) * 1984-08-17 1986-04-09 VOEST-ALPINE St. Aegyd Aktiengesellschaft Dispositif de purification catalytique de gaz d'échappement ainsi que procédé pour sa production
WO1990004087A1 (fr) * 1988-10-11 1990-04-19 Emitec Gesellschaft Für Emissionstechnologie Mbh Catalyseur a systeme d'enveloppe double

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5232019B2 (fr) * 1973-01-13 1977-08-18
DE2442488A1 (de) * 1974-09-05 1976-03-18 Daimler Benz Ag Vorrichtung zur katalytischen reinigung der auspuffgase von brennkraftmaschinen, insbesondere von kraftfahrzeugbrennkraftmaschinen
US4425304A (en) * 1981-01-20 1984-01-10 Toyo Kogyo Co., Ltd. Catalytic converter
US4394331A (en) * 1981-11-06 1983-07-19 Honda Giken Kogyo Kabushiki Kaisha Carburetor
EP0333784A4 (en) * 1987-07-27 1991-07-17 Hyok Sang Lew Convective inertia force flowmeter

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1406704A (en) * 1972-02-24 1975-09-17 Gkn Sankey Ltd Emission control device
US3906723A (en) * 1974-03-08 1975-09-23 Toyota Motor Co Ltd Exhaust gas purifying system
US3972687A (en) * 1974-03-21 1976-08-03 Paul Gillet Gmbh Catalytic converter having pressurized-gas support means
US4191013A (en) * 1976-06-02 1980-03-04 Nippon Soken, Inc. Device for purifying exhaust gases from internal combustion engine
US4049388A (en) * 1976-07-12 1977-09-20 Arvin Industries, Inc. Center air manifold for catalytic converter
US4231220A (en) * 1977-08-17 1980-11-04 Toyota Kidosha Kogyo Kabushiki Kaisha Secondary air control system for an internal combustion engine
US4235843A (en) * 1978-08-14 1980-11-25 Toyo Kogyo Co., Ltd. Catalytic converter
US4394351A (en) * 1981-09-08 1983-07-19 General Motors Corporation Dual-monolith catalytic converter with secondary air injection
EP0177479A1 (fr) * 1984-08-17 1986-04-09 VOEST-ALPINE St. Aegyd Aktiengesellschaft Dispositif de purification catalytique de gaz d'échappement ainsi que procédé pour sa production
WO1990004087A1 (fr) * 1988-10-11 1990-04-19 Emitec Gesellschaft Für Emissionstechnologie Mbh Catalyseur a systeme d'enveloppe double

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993024745A1 (fr) * 1992-05-25 1993-12-09 Eero Kynsilehto Epurateur catalytique pour les gaz d'echappement d'un moteur a combustion interne a alimentation additionnelle en air
US5590522A (en) * 1992-05-25 1997-01-07 Finn Katalyt Oy Catalytic combustion engine exhaust gas purifier with additional air supply
EP1887194A1 (fr) * 2006-08-04 2008-02-13 J. Eberspächer GmbH & Co. KG Dispositif de purification de gas d'échappement

Also Published As

Publication number Publication date
US5094072A (en) 1992-03-10
EP0408910A3 (en) 1991-09-18
DE3923517A1 (de) 1991-01-24

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